sports.yahoo.com – Giancarlo Stanton, the 25-year-old National League MVP runner-up, and the Miami Marlins, baseball’s prodigal franchise, agreed to a 13-year, $325 million contract extension. The richest contract in sports history could keep Stanton in Miami through 2027, when Stanton would be approaching his 38th birthday. The Marlins agreed to include a no-trade clause and an opt-out opportunity after six years. Both are unusual for the Marlins, but speak to past practices that have made them an unstable franchise and unattractive to high-end free agents.